If you want to check it, oil-gasket-seal is it. The factory lock bar is 1" wide and 3 3/4" long, 1/4" thick, deeply beveled on the ends. Some have reported using a 4" strap hinge from the hardware store with good results. The gear teeth are tough. Torque to 190-210 ft/lb. All I have is a 1/2" torque wrench, it clicked at 150 and I said good enough.